Paul Caneiro has been charged with an arson attack on his own home just hours before his younger brother’s family were killed in a house blazeAP:Associated Press

The 50-year-old’s body was discovered on the front lawn, while his wife, Jennifer, 45, their 11-year-old son Jesse and eight-year-old daughter Sophia were found dead inside.

Authorities now believe all four of the Caneiros were killed before their £1million mansion in upmarket Colts Neck was torched, according to NBC 4.

Mr Canerio, CEO of a tech company, reportedly suffered at least two gunshot wounds to the back and head while his family appear to have been stabbed.

Medical examiners have not determined causes of death for them but said the bodies of the mum and her children were badly burned.

Tech company CEO Keith Caneiro, his wife Jennifer and their two young children were killed in the blazeThe couple’s young son was found dead in the horrendous fireFacebookTheir daughter was also killed in the fireFacebook

AP:Associated Press

Caneiro’s body was found outside the home with a gunshot wound[/caption]

Prosecutors sought to reassure the public that a random killer was not on the loose in the affluent community, which is also home to some celebrities.

Monmouth County Prosecutor Christopher Gramiccioni said: “We believe that this family in some form or fashion was targeted.”

Paul Caneiro, 51, was charged with setting fire to his home in Ocean Township and is scheduled to appear in court next Wednesday, authorities said.

Gramiccioni said he could neither confirm nor deny that Paul Caniero was a suspect in the slayings.

The family of four were murdered at their home in New Jersey on TuesdayMum-of-two Jennifer Caneiro and her two children were found severely burned inside the upmarket homeFacebookMr Caneiro was found dead outside the sprawling mansion while his wife Jennifer was found dead inside along with their two young childrenThe Caneiros’ young daughter was also killed in the blazeFacebookThe Caneiros’ young boy died in the horrendous blazeFacebook

He was accused of using gasoline to set his home on fire while his wife and two daughters were inside.

No one was hurt in that blaze, which was reported at 5am on Tuesday – about seven hours before the Colts Neck fire was reported.

Keith and Paul Caneiro were partners at a technology firm in Asbury Park called Square One.

All four members of Keith Caniero’s family were “victims of homicidal violence,” the prosecutor said, adding that there was no indication of suicide.

The mansion is in Colts Neck, a well-to-do community about 50 miles south of New York CityAP:Associated PressFire investigators are probing a suspected arson attackABC

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The community held a vigil for the family, who were well known in the town, on Wednesday night.

Colts Neck, about 50 miles south of New York City, is home to a number of celebrities, including Bruce Springsteen.

Queen Latifah sold her mansion there in 2015 while members of Bon Jovi have also called it home.

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